Carbureter.



J. L. FRITZ.

GARBUEETEB.

AFPI ;3ATION FILED FEB. 11. x911v Patented May 30 1911.

7 mvamon ATTORNEYS UNITED srA'rns PATENT OF ICE JULIUS L. FRITZ, OF PHILADELPHIA, PENNsYLvANIA, ASSIGNOR 01: ONE-HALF TO AMOS H. OMAN, F IPHILADELPHIA, PENNSYLVANIA. i

CARBURETER.

specification.

One object of my present invention is to devise a novel construction of a carbureter wherein the range of speed of the engine is greatly increased and wherein the low speed adjustment is independent of the intermediate and high 5 eed adjustments, while the intermediate a justment is independent of the low and high speed adjustments, and the high speed adjustment is independent of the intermediate and low speed adjustments, all of these adjustments coopcrating under high speed, 1t being understood that I contemplate providing an accurate adjustment for all speeds of the engine intermediate the low and-high range of the carburetor. I

A. further object of my invention is. to eliminate the necessity of employing springs and to devise a construction wherein all the working parts are vertically arranged. with a consequent reduction in the wear of such parts.

A fu ther ob'ect of my invention is to devise a novel car iureterwhich will not be affected by climatic conditions and wherein I have eliminated the necessity of employing in conjunction with a valve for controlling the supplemental air inlet, levers, pivot pins, springs or slides which'are subjected under practical conditions to wear or change through adhesion of dirt or climatic condi tions. 1

A further ohjectof my invention is to device a novel carbureter which is adaptable for either gasolene or kerosene vaporization and is adjustable to be used with the varied grades o gasolene now on the market.

A further object of my invention is to devise a novel carburetor wherein means are provided in permitting the admission of a greater quantity of air as the suction 1ncreuscs Without the admission of an additional amount of fuel. 1

A further object of my invention is to devise a novel carburetor having means for admission of additional fuel and airjiand novel means for controlling the admission of the additional fuel and air;

Specification of Letters Patent.

Application filed February 11, 1911. Serial No. 608,087.

Patented May-30, 1911.

A further object of myinvention is to de vise a novel construction of gravity valve and novel means for limiting the movement thereof. V

' A further'object of my invention is to devise a novel adjustment of the floatvalve anda novel construction of filtering device for the gas inlet to the carbureter and a novel construction of a removable seat for the float valve. V i

Aduither object of myinvention is to devise a novel construction of carburetor wherein all of; the working parts are readily accessible for. the 'purpos ofinspection, re

Inoval or repair and wherein the consumption of 'fuel' is more economical more power is attained and wherein the carbureter has a greater range of perfect adjustment than in the devices heretofore employed.

IVith the above and other ob'ects in view," which will hereinafter-more fully appear in the detailed descri tion of the invention, my device consists of a novel construction of for varying speeds and wherein means is provided for permitting the admission to the mixing chamber of additional air or fuel or both, as required. a

It further consists of other novel ,features' of construction, allas will be hereinafter .fully set forth. v-

For the purpose of illustrating my invention, I have shown in the accompanying vdrawings one form thereof which is at resent preferred by me, since the same haseen found in practice to give satisfactory and reliable results, although it is to-bc understood that the various. instrument-alities of which my invention consists can be variously arranged and organized and that my invention is not limited to theprecise arrangen'ientand organization of these instrumentalities as herein shown and described.

Figure 1 represents a-sectional elevation. of a carbureter embodying my invention.

Similar numerals of reference indicate cor-responding parts in the figures,

float chamber Q -provided with a threaded extension 3, having-an internal beveled Wall 4 against which is adapted to seat the comvided with a passage 7 therethrough, the upper end of which formsa seat for the conical carburetor adapted to beaccurately adjusted Referring to the drawing s,;1 designates: the carbureter casing in which 15 located a.

cal face 5 of a removable valve seat .6 provalve 8, which latteiis adjustably connectedwith respect to the float valve stem 9 and, in the present instance, I have shown the same as being" threaded therein and locked in its adjusted position by means of the screw 10 abuttin thereagainst, said screw 10 being longitu 'nally adjustable relatively to the float valve stem 9. i

- 11 designates a filtering screen which .in

the presentin'stance, consists ofaperturedmetal or gauze secured to an annulus ;12

whichlatter abuts against one side of the removablevalve-sejat 6 and is maintained in assembled position by means ofa nut 13 having a passage 14 therethrough preferably in'alinement with the fuel passage? in the fioat valve seat 6.- 'The nut 13 has its lower end threaded, as indicated at 15, thereby. adapting the same to be readily connected to the source o'f-fiiel supply. I

16 designates a cap or closure having threaded connection with the'casingl and provided with a'chamber 17 which provides for the proper movement of the valve stem 9. ,ISd'esignates a floatlever pivoted at 19 to the casing and havi a fork 20 which operates between the hea s 21 and 22 on'the valve stem 9, The-end of the lever 18 is nut 30 whereby the conical wall 31 will enadapted'to coiiperate with a float 23 prefer.

ably formed of a hollow metallic casing.

24: designates a mixing chamber from which extends a passage 25 having its smaller diameter intermediate its length, thereby forming-reversely'inclined conical walls 26 .and 27, the wal1 27 at its lower end being united to a bridge'piece 28 having a depending threaded flange 29 adapted to receive a gage with the conical wallv32 of the casing, and a'fiuid tight connectionformed at this point.- The bridge piece 28 is provided with fluid passages 33 therethrough which com- 'municate with a vertically arranged fuel passage 34. '7

35 designates themain spray nozzle or jet which has threaded engagement with an extension of the bridge piece 28 and is pro vided with a restricted outlet 36 and a valve seat 37 with which cotiperates a needle vzilve 38 having threaded engagement with a nut 39 which latter has threaded engagement with anel r'tension ,from the bridge piece 28.

40: rdesig'nates a packing nut having threaded engagement with the nut 39. The needle valve 38'is provided with a suitable handle or lever 41 whereby thesame may be manually actuated when desired. ,The floatchamber 2 is provided with a fuel passage 42 which communicates with a supplementary fuel nozzle 43, the passage 44 of which at its'lower end forms a valve seat and is controlled by a valve 45 having threaded engagement with 'a flange 46 to which latter is secured a packing nut 47, it being understood that the valve 45 is prothrea ed, as .indicat ing the. same to on age with and be carried 5' "with a lever 7 3'which latter is provide same maybe manually actuated, .The discharge outlet of the fuel nozzle 43 vided with a'guitabl'e handle 48 whereby the is provided with tapering internal walls 49" and avalveseat. 50. The fuel nozzle 43 extends into supplementa'ry air inlet 51 which is "preferably restricted in proximity to the discharge end of the nozzle 43' and forms a supplemental air inlet 52, which communi 'cates by means-of the passage 53 with the mixing chamber 24. 1 I I I The supplemental air inlet 52 is controlled;

by means of a gravity valve-54 provided on. its operative face with "suitable packing 55,- of leatheror other desired material, itbe' noted that the valve is Y centraHy-cl fambere as seen at 56', and theldvirereiids of the' valve and the gasket 55 areprovided with an aperture -57 'therethrough "thereby'fedaptihg the; same ;to freely travel on a waive; 58;

ball-valve 459 which co.-a'cts with-the-valve seat 50 to control-the flow of fuelthiou h" the supplemental fuel pawig'e &4. T e upper endof" the valve. stem -58 is provided} with ahead 60 therebv adapting the same to be manually actuated; it being. noted that the u per portion of the valve-stem 59. is

ed at61, thereby adaptrelatively to a sleeve 67'which latter has threaded engagement with a bonnet 68 having threaded or other engagement with the casing 1--, the sl'eeve 67 being provided with suitable operating head 69 and being locked in adjusted position by means-of a loch nut 70. a 71 designates the discharge outlet from thevmixing chamber which is. contrfiled by means of a valve 72 operatively c g ected with an angle arm 74 one end oi which coiip'erates I with the lug 75 carried by the casing 1, while I the other end thereof is provided with an adjusting screw 76, whereby a fixed. throttling effect may be produced when desired.

The carbureter is provided with an extra heavy coupling flange 77 in order to prevent buckling when the'same'is secured to the/ intake manifold pipe.

' The operation of my novel construction of carbureter will 'now "be readily apparent" and is follows-: T he throttle-valve 72 is controlled in the usual manner by means of a suitable connection operatively secured to the lever 73. When" working under low-- additional amount of air to enter the mixing chamber 24 and, commingle with the ases thereinl Under intermediate speed a ustments. the gravity valve 54 will be raised from its seat intocontact with' the sleeve 62, so as to cause the latter to move upwardly;

the amount of such movement being limite 'by the enga ement oft-he nut/'65 with the mner endo the sleeve '67, it being under stood that the amount of fuel which is permitted to pass from the float chamber 2,.

through passage'42, and passage 44 in the fuel nozzle 43, maybe accurately controlled by' actuating the valve stem 61 and it will further be apparent that the height jto which I the valve 54 may rise may be accurately controlled by adjusting the sleeve 67 or by ad-. justing t e nut 65 relatively to the sleeve 62. For high speed. adjustment the lever 48 .is

, actuated to control the amount of' fuel;passing through the-supplementalfuel nozzle 42.

.. It willnow be apparent -to those skilled in i this art that the various-ad'ustments which I have provideclfor the di. erentspecdsare' all independently adjustable, yet at the same time they all cooperate with each other to produce the requisite results. 1. I

Special attention is directed to the simplified andcompact construction of my device and the manner in which the. various working parts can be removed for the purpose of inspection or repair.

Thefloat valve 8 may be adjusted as de- Y sired relatively to the float valve stem 9 and locked in its adjusted position by means of the screw 10 which abuts 'thereagainst. lVhen it is desired to remove the float valve.

it is simply necessary to unscrew the cap or closure l6 whereupon the same may be readily moved without the use'of any tools. The valve seat 6 may be readily removed by uncoupling the nut 13 and removing the filter 11, so that the valve seat may be readily reground when desired; 1

' A carbureter' constructed in accordance with my invention may be easily stand and is not alfected by the various changes in temperature due to climatic conditions.

In so-far as I am .aware, I am the first in the art to devise -a carbureter rovided with a supplemental air and fuel in ct port which is controlled by a gravity valve and where positive means are providedfor controlling the movement of such valve and th amount of fuel passing through the supp emental :inlet and it is to be understood that my claims to such features are to be interpreted with corresponding scope.

The valve 38 may be readily removed when desired, as .is apparent, by simply manipulating the packing nut 40 and the nut 39 and the .valve 45 may bealso readily removed by manipulating, in the proper manner, the packing nut 47. The gravity valve 54 may be readily removed when desired by removing the bonnet 68 and the a valve stem 61 and the various sleeves 62 and ",6? may be readily removed wheu'desired without the necessity of employing'any tools.

It will now be apparent that I have devisedl a novel and useful construction of a carbureter which embodies the features of advantage enumerated as desirable in -the statement oftthe invention and the above description 'and while-I have,"in' the present instance, shown and described a preferred embodiment thereof which hasbeen found in practice to give satisfactory and reliable results, itis' to be'understood that-the same issusceptible of modification in various particulars withoutdeparting from the spirit flotscope of the invention or sacrificing any of'its advantages.

; Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: v

.-' I, In a device of the character stated, a

casing having a mixture eutlet, a mixin chamber in said casing having-airzand fue inlets, fuel supply for said mixing chamber,

a supplemental air inlet having communication with said mixing chamber, a supplemental fuel nozzle, and. suction controlled means for controlling the su plemental air inlet, and on a predetermin movement of said means'controlling the amount of fue passing to the supplemental air inlet.

2. In a device ofthe character stated, a. casing'having a mixture outlet, a mixing chamber in said casin having air and fuel inlets, a fuel supply or said mixin chamher, a supplemental air inlet havin ommunicati'on with said mixing chambi', a'

fuel jet in said supplemental inlet and having communication with "said fuel supply, suction cont-rolled means including a ravity valve for controlling a supply a? air through" said supplemental air inlet, and

means'opcrated thereby after said gravity valve reaches a predetermined point 'in' its travel for controlling said supplemental fuel et.

3- In a device-ofthe character stated, a

casing having a mixture outlet, a mixing her, a supplemental air inlet having com- -chambcr in said casing having air and fuel inlets, a fuel supply for said mixing cham-.

munication with said mixing chamber, a

supplemental -'fuel jet in said supplemental air inlet and having communication with said fuel supply, a gravity valve controlling said su plemental air inlet, and means op erated iiy said gravity valve for controlling said supplemental fuel jet. v J

4. In a device, of the character stated, a casing having a mixture outlet, a mixing chamber'in said casing having air and fuel inlets, a fuelvsupply for said mixing chamber, a supplemental air inlet having communication with said mixing chamber, a

supplementalfnel jet in said supplemental air inlet, a gravity-valve controlling said" sup" lemental. air inlet, a valve controlling sai supplemental fuel jet, and means actuated by the movement of; said ravity, valve for shifting said fuel valve a ter a" prede tel-mined movement'of said gravity valve. 5. In a device of the -character--statcd,'a

casin having a'mixture outlet, a mixingchain er in said casing having air and fuelinlets, a .fuelsupply foris'aidmixing cha'm- .ber, asuppleme'ntal air inlet 'having communication with said mixingchamber, a

supplemental fuel inlet disposed within 'said supplemental air linlet',-a V a trolling said supplementa air inlet, a valve 39 'avityvalve concontrolling said supplemental fuel inlet and actuated by :the' movement of said gravity valve, and means ,to'vary the operative re. lation between said valves,

6. a a device of the character stated,

casin having a mixture outlet, a mixing chain er in said casing, havingair and-fuel inlets, a supplemental air inletdiaving com-- munication vwith said mixing chamber, 'a supplemental fuel jetv in said supplemental air inlet, mcans'to. regulate :the'fl'owof fuel pendent means for controlling the discharge from said supplemental fuel nozzle,'and an lndepcm'le'ntly movable gravity valve con-' trolling said supplemental air inlet and said independent means. i

8. The combination in a carbureter, of a casing having atmixin chamber provided with a main and a supp emental air inlet, a

'main fuel nozzle-in theimain air inlet, a

supplemental fuel nozzle in the supplemental air inlet, a fuelsupplyin communication with said nozzles, a manually actuated valve for each of said main and'said supplemental fuel nozzles, gravity valve controlling the supplemental air inlet, and

a valve on which said gravity valve is mounted for controlling the supplemental fuel nozzle on a predetermined movement of the gravity valve. We 4 9. The combination in a carburetenof a casing having a mixing chamber. provided witha main and a supplemental air inlet, a fuel nozzle for the main air'inlet, a supplemental fuel nozzle for the supplemental fuel inlet, a fuel supply in communication with said fuel nozzles, a gravity valve controlling thesupplemental air inlet, and means for varying the effective weight of 'the'grayity" valve and simultaneously therewith control- '80 ling the supplemental fuel/ n0.".'zle. 4

10. The combination in acarbureter, of a casing having a mixing chamber provided with a main air inlet, a supplementalhir' inlet, a main fuel nozzle .inthe main air inlet, a supplemntalifuel nozzle in the sup-- v plemental air inlet, means for feeding fuel to said nozzles, a gravity valve controlling the supplemental airinlet a valve-controh ling a supplemental fuel nozzle, a sleeve within which the snpplemen'tal valve is 1on 'gitudinally adjustable. and with-which the gravity 'valveco-acts' 'at a predetermined point-in its travel to actuate the sup'p'lea mental fuel valve, and means for regulating l the travel of said sleeve. 7 m i v v 11, The combination in a earburetenof a;

casing having a mixingchamber and" a main and a supplemental air inlet communicatin ftherewith, a main fuel nozz'le,asup" 'lementa fuel nozzle, means for feeding fue thereto, means for-manually controlling each of said fuel noz'zles, a gravity valve controlling the supplemental air inlet, a-supplement-al fuel valve controlling the supplemental fuel nozm zle, and means co-acting with the gravity valve. and the supplemental fuel valve to] control the movement of the latter.

12. The combination in a carbureteig of a casing having a mixing chamber and a main and a supplemental air inlet communicating therewith, a main fuel nozzle 'a supplea mental fuel nozzle, means'for-feeding' fuel thereto, a gravity valve controlling the supplemental air inlet, a supplemental fuel valve controllin thesupplemental fuel nozzle, a longitu i'nally-adjustably movable member by which said supplemental fuel valve is adjustably carried,fan abutment adjustubly carried bysaid inembenand 'eans 13,0

adjustably '-carriedby said casing with which said abutment is adapted to comet to limit the movement of said membefis'aid gravity valve co-acting with saidm'e'mb e'r only after-it has opened a predetermineddis- 2 lance.

13. The combination in a carbureter, of a" casing havin a mixing chaining; a suppl mental air in ct communicatingtherewi'th, a"

main fuel nozzle, a-supplemental fuelmozzle,

seems means for feeding fuel thereto, a gravity valve for the supplemental fuel nozzle, a sleeve in which said valve is threaded, a second sleeve longitudinally adjustable Within the casing and in which said first sleeve is freely movable, and a stop member adjust ably carried by said first sleeve and adapt ed to "engage said second sleeve to limit the movement of said supplemental valve, said second sleeve being in the path of said gravity valve andactuated thereby after the lathas reached a predetermined point in its travel.

14:, The combination in a carbureter, of a casing having a mixing chamber and a main and a supplemental fuel nozzle, means for feeding fuel to said nozzles, a valve for the supplemental air inlet normally maintained seated by gravity, ahd a valve for the supplemental fuel inlet normally maintained seated by gravity,the gravity air valve being controlled by the suction, and the gravity fuel valve being controlled by the gravity air Valve.

15. The combination in a carburetor, of a casing having a mixing chamber and a main and a supplemental air inlet communicating therewith, a main fuel nozzle, a supplemental fuel nozzle, means for feeding fuel to said nozzles, a valve for the supplemental air nozzle normally maintained seated by gravity, a valve for the supplemental fuel inlet normally maintained seated b ravity, the gravity air valve being control ed by the suction and the gravity fuel valve being controlled by the gravity air valve, and means for varyin the time of cooperation between the two Va ves.

16. The combination in a carburetor, of a casing having a mixing chamber and a main and a supplemental air inlet communicating therewith, a main fuel nozzle, a sup lemental fuel nozzle, means for feeding fue to said nozzles, a valvefor the supplemental ai.v nozzle normally maintained seated by grav ity, a valve for the supplemental fuel non-- zlc, the gravity air valve being controlled by the suction and the gravity fuel valve being controlled by the gravity air valve, and devices for limiting the amount of movement of said valves.

17. The combination in a carburetor, of a mixing chamber having a main and a supplemental air inlet communicating there with, a main and a supplemental fuel nozzle, means for feeding fuel thereto, a gravity valve controlling the supplemental air inlet, a fuel valve controlling the supplemental fuel nozale and upon which the gravity air valve is guided, the supplemental fuel valve being actuated by the supplemental gravity valve when the latter reaches a predetermined point of opening thereby increasing the Weight at such times of the gravity air valve, and means for limiting the amount of movement of said valves.

JULIUS L. FRITZ. Witnesses:

(J. D. Mover, F. A. NEWTON. 

